mirror of
https://github.com/topjohnwu/Magisk.git
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152 lines
3.7 KiB
C
152 lines
3.7 KiB
C
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#ifndef _ELF_H_
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#define _ELF_H_
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#include <stdint.h>
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/*
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** ELF structure
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**
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** +-----------------+
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** | ELF magic | | 4 bytes
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** +------------ +
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** | ELF class | | 1 byte
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** +------------ +
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** | ELF header |
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** +-----------------+
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** ~
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** +-----------------+
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** | program header | kernel info
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** +-----------------+
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** | program header | ramdisk info
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** +-----------------+
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** | program header | dtb info
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** +-----------------+
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** | program header | (possible) cmdline info
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** +-----------------+
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** ~
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** +-----------------+
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** | section header | cmdline info
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** +-----------------+
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** ~
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** +-----------------+
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** | |
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** | Data |
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** | |
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** +-----------------+
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*/
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typedef uint32_t elf32_addr;
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typedef uint16_t elf32_half;
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typedef uint32_t elf32_off;
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typedef uint32_t elf32_word;
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typedef uint64_t elf64_addr;
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typedef uint16_t elf64_half;
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typedef uint64_t elf64_off;
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typedef uint32_t elf64_word;
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typedef uint64_t elf64_xword;
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#define ELF_MAGIC "\x7f""ELF"
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#define ELF_MAGIC_SIZE 4
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_OSABI 7
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#define EI_PAD 8
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#define ELFCLASSNONE 0
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#define ELFCLASS32 1
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#define ELFCLASS64 2
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#define ELFCLASSNUM 3
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#define ET_EXEC 2
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#define EM_ARM 40
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#define EI_NIDENT 16
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typedef struct elf32_ehdr{
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unsigned char e_ident[EI_NIDENT];
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elf32_half e_type;
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elf32_half e_machine;
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elf32_word e_version;
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elf32_addr e_entry; /* Entry point */
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elf32_off e_phoff;
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elf32_off e_shoff;
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elf32_word e_flags;
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elf32_half e_ehsize;
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elf32_half e_phentsize;
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elf32_half e_phnum;
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elf32_half e_shentsize;
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elf32_half e_shnum;
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elf32_half e_shstrndx;
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} elf32_ehdr;
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typedef struct elf64_ehdr {
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unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
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elf64_half e_type;
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elf64_half e_machine;
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elf64_word e_version;
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elf64_addr e_entry; /* Entry point virtual address */
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elf64_off e_phoff; /* Program header table file offset */
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elf64_off e_shoff; /* Section header table file offset */
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elf64_word e_flags;
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elf64_half e_ehsize;
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elf64_half e_phentsize;
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elf64_half e_phnum;
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elf64_half e_shentsize;
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elf64_half e_shnum;
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elf64_half e_shstrndx;
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} elf64_ehdr;
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typedef struct elf32_phdr{
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elf32_word p_type;
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elf32_off p_offset;
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elf32_addr p_vaddr;
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elf32_addr p_paddr;
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elf32_word p_filesz;
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elf32_word p_memsz;
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elf32_word p_flags;
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elf32_word p_align;
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} elf32_phdr;
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typedef struct elf64_phdr {
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elf64_word p_type;
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elf64_word p_flags;
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elf64_off p_offset; /* Segment file offset */
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elf64_addr p_vaddr; /* Segment virtual address */
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elf64_addr p_paddr; /* Segment physical address */
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elf64_xword p_filesz; /* Segment size in file */
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elf64_xword p_memsz; /* Segment size in memory */
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elf64_xword p_align; /* Segment alignment, file & memory */
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} elf64_phdr;
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typedef struct elf32_shdr {
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elf32_word s_name;
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elf32_word s_type;
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elf32_word s_flags;
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elf32_addr s_addr;
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elf32_off s_offset;
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elf32_word s_size;
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elf32_word s_link;
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elf32_word s_info;
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elf32_word s_addralign;
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elf32_word s_entsize;
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} elf32_shdr;
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typedef struct elf64_shdr {
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elf64_word s_name; /* Section name, index in string tbl */
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elf64_word s_type; /* Type of section */
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elf64_xword s_flags; /* Miscellaneous section attributes */
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elf64_addr s_addr; /* Section virtual addr at execution */
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elf64_off s_offset; /* Section file offset */
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elf64_xword s_size; /* Size of section in bytes */
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elf64_word s_link; /* Index of another section */
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elf64_word s_info; /* Additional section information */
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elf64_xword s_addralign; /* Section alignment */
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elf64_xword s_entsize; /* Entry size if section holds table */
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} elf64_shdr;
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#endif
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